Towing attachment for vehicles



FIG. 1 is a top perspective view of the towing attachment for vehicles of the present invention showing our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a side view thereof, the opposite side views being identical;

FIG. 4 is a front view thereof;

FIG. 5 is top plan view thereof; and,

FIG. 6 is a bottom view.

The broken lines illustrate portions of the towing attachment for vehicles that form no part of the claimed design. 

CLAIM The ornamental design for towing attachment for vehicles, as shown and described. 